If Bradford and Xever both touched the turtles before being mutated, then why was Bradford turned into a dog and why Xever a fish? Hmmmm..

Bradford was previously bitten by the Akita dog so he had dog DNA in his blood stream already. Xever handled a struggling live fish with his bare hands so his skin could have mild cuts/scratches from the fish scales/fins.

I guess when it comes to mutation the animal DNA right in your blood stream is going to be more dominant than one you barely came in skin contact with during battle. It's not just about what you last touched, the amount of DNA it left on you also affects the mutation result.

Bradford was previously bitten by the Akita dog so he had dog DNA in his blood stream already. Xever handled a struggling live fish with his bare hands so his skin could have mild cuts/scratches from the fish scales/fins.

I guess when it comes to mutation the animal DNA right in your blood stream is going to be more dominant than one you barely came in skin contact with during battle. It's not just about what you last touched, the amount of DNA it left on you also affects the mutation result.

I see. It's a reasonable answer, though I am not certain if I can believe it entirely. Taking Snakeweed for example, he was touched and pummeled by the turtles but he gets turned into a giant weed just because he was standing on it. Thinking back, most of the mutations that were incidental did have some kind of other affliction. Like Spider Bites was bitten by a spider right before he was mutated. I can't think of any others off the top of my head. I definitely appreciate your answer, Evan!

Donatello keeps saying the mutagen in 2012 is unpredictable and unstable, so the mutations might just be unpredictable and unstable!

Possibly. I'll take that.

Question for other peoples' opinions! Is it just me or do the first two episodes of the series seem very cinematic to you? Revisiting them, it felt like I was watching a legit movie! I think Nick handled the beginning of the show splendidly!

In the TCRI episode, the turtles encounter the air of Dimension X. What's the deal with that? Were they making the air more suitable for more aliens to exist? Because Kraang seems to be able to breathe the air from the Earth just fine. o.O